\documentclass{article}
\usepackage{pdfpages}%直接插入pdf文件页
\graphicspath{{../egfigure/}{../example/}}

\begin{document}

\includepdf[pages=-]{../egfigure/tgbcitationms.pdf}

\IfFileExists{../egfigure/tngbcitationay.pdf}
{\includepdf[pages=-]{../egfigure/tngbcitationay.pdf}}
{\includepdf[pages=-]{../egfigure/tngbcitationaynew.pdf}}

\includepdf[pages=-]{../egfigure/tgbbiblioms.pdf}

\end{document}
